diff --git a/Dockerfile b/Dockerfile
index e85df73a639762574a7767f3fcf7fad618304775..4b835cb247178a56a4aaee9ad46f2a5a590d5cf0 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,5 +1,6 @@
 # Specify parent image. Please select a fixed tag here.
 FROM registry.git.rwth-aachen.de/jupyter/profiles/rwth-minimal-2021-ss:latest
+# FROM jupyter/minimal-notebook:lab-3.1.4
 # .. Or update conda base environment to match specifications in environment.yml
 ADD environment.yml /tmp/environment.yml
 # All packages specified in environment.yml are installed in the base environment